Water Neck, Billet Aluminium Swivel Blue Anodised, 45 Degree,Holden V8 253.308 Valve Covers Knurl Diameter:

Knurl Diameter:

RACEWORKS AN-10 45DEG ORB TO MALE FLARE ADAPTER -10AN

Takes the large thread on stud

Valve Stem locks to suit Aeroflow Performance Chrysler Big Block cylinder heads

Water Neck, Billet Aluminium Swivel Blue Anodised, 45 Degree,Holden V8 253.308 Valve Covers Knurl Diameter:PFETH 801BL Proflow Water Neck, Billet Aluminium Swivel, Blue Anodised, 45 Degree, For Holden V8 253. 308 Proflow's billet thermostat housings not only look good, but they also get rid of leaky paper gaskets thanks to their O ring seal design. You can choose the conventional vertical housing or the high tech 360 degree swivel housing. They're available straight up or with a 0, 45, or 90 degree angle and come complete with stainless hardware.